The axial skeleton groups together which sets of bones?

Correct Answer: D

Rationale: Axial skeleton: skull (cranial/facial), thoracic cage (ribs, sternum), vertebral column. A and B include appendicular parts, C adds girdles (appendicular). Answer is D, per the document.

Correct Answer: B

Rationale: The skeleton comprises axial (skull, spine, ribs) and appendicular (limbs, girdles) parts. Other options omit or misgroup components. Answer is B, per the document.

Correct Answer: B

Rationale: Anatomically, hypochondriac is the abdominal region below the ribs (‘hypo’ = below, ‘chondra’ = cartilage). A is colloquial, C/D are nonsense. Answer is B, per the document.

Correct Answer: C

Rationale: Abduction moves a limb away from the midline (e.g., thigh laterally). Extension straightens, adduction moves toward, flexion bends. Answer is C, per the document.

Correct Answer: C

Rationale: Bone is living tissue with cells, blood vessels, and marrow—most blood cells are made in marrow (A), it stores minerals like calcium (B), and it protects/supports organs (D). 'Bone is a dry and non-living supporting structure' is incorrect due to its living nature.